[Minios-devel] [UNIKRAFT/NEWLIB PATCH 2/6] Glue code for some user-related libc functions

[Florian Schmidt <florian.schmidt@xxxxxxxxx>]

Signed-off-by: Florian Schmidt <florian.schmidt@xxxxxxxxx>
---
 Makefile.uk |  1 +
 user.c      | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+)
 create mode 100644 user.c

diff --git a/Makefile.uk b/Makefile.uk
index 82e4e6e..4de23e9 100644
--- a/Makefile.uk
+++ b/Makefile.uk
@@ -113,6 +113,7 @@ LIBNEWLIBGLUE_SRCS-y += $(LIBNEWLIBC_BASE)/resource.c
 LIBNEWLIBGLUE_SRCS-y += $(LIBNEWLIBC_BASE)/pty.c
 LIBNEWLIBGLUE_SRCS-y += $(LIBNEWLIBC_BASE)/time.c|glue
 LIBNEWLIBGLUE_SRCS-y += $(LIBNEWLIBC_BASE)/locale.c
+LIBNEWLIBGLUE_SRCS-y += $(LIBNEWLIBC_BASE)/user.c
 
 
################################################################################
 # Newlib/libc code -- argz
diff --git a/user.c b/user.c
new file mode 100644
index 0000000..33065b4
--- /dev/null
+++ b/user.c
@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+/*
+ * libnewlib glue code
+ *
+ * Authors: Florian Schmidt <florian.schmidt@xxxxxxxxx>
+ *
+ * Copyright (c) 2019, NEC Europe Ltd., NEC Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
+ */
+
+#include <errno.h>
+#include <pwd.h>
+
+/* No password file available */
+struct passwd *getpwnam(const char *name __unused)
+{
+       errno = EIO;
+       return NULL;
+}
+
+/* In our unikernel, we're always what amounts to root */
+uid_t getuid(void)
+{
+       return 0;
+}
-- 
2.21.0


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